. >>> new details about how the national security agency gathers nearly 5 billion cell phone records around the world every day. those records are put into a huge database that contract the movements of individuals, map their relationships, how they're connected work they're calling were creates a web of information. >> bringing in our pentagon correspondent, barbara starr, on this story because, barbara, you hear about all of this, the cell phone locations and who they're trying to trace, is it americans, americans living abroad, how expansive is this, if you're overseas and you're on the phone? >> reporter: well, we don't know a lot about how expansive it is. "the washington post" reporting that this all came from more leaks by, guess who, edward snowden and documents that he had, and that is it about 5 billion cell phone records a day. how much does it affect americans? well, by all accounts, if you're an american, you're out of the country on business or may vation, you pick up your cell phone, use it, that call that record of that call, not the conversation itself, is most likel